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Table 1 List of recurring symbols

From: Model order reduction for gas and energy networks

p

Pressure

\(N_{s}\)

Number of supply nodes

q

Mass-flux

\(N_{0}\)

Number of internal nodes

p̄

Steady-state pressure

\(N_{d}\)

Number of demand nodes

q̄

Steady-state mass-flux

\(N_{c}\)

Number of compressors

\(s_{p}\)

Supply node pressure

\(N_{p}\)

Dimension of pressure space

\(d_{q}\)

Demand node mass-flux

\(N_{q}\)

Dimension of mass-flux space

\(s_{q}\)

Supply node mass-flux

\(n_{p}\)

Dimension of reduced pressure space

\(d_{p}\)

Demand node pressure

\(n_{q}\)

Dimension of reduced mass-flux space